Android从Assets拷贝文件以及文件夹到指定目录

public static void copyFilesFromAssets(Context context, String assetsPath, String savePath){
       try {
           String fileNames[] = context.getAssets().list(assetsPath);// 获取assets目录下的所有文件及目录名
           if (fileNames.length > 0) {// 如果是目录
               File file = new File(savePath);
               file.mkdirs();// 如果文件夹不存在，则递归
               for (String fileName : fileNames) {
                   copyFilesFromAssets(context, assetsPath + "/" + fileName,
                           savePath + "/" + fileName);
               }
           } else {// 如果是文件
               InputStream is = context.getAssets().open(assetsPath);
               FileOutputStream fos = new FileOutputStream(new File(savePath));
               byte[] buffer = new byte[1024];
               int byteCount = 0;
               while ((byteCount = is.read(buffer)) != -1) {// 循环从输入流读取
                   // buffer字节
                   fos.write(buffer, 0, byteCount);// 将读取的输入流写入到输出流
               }
               fos.flush();// 刷新缓冲区
               is.close();
               fos.close();
           }
       } catch (Exception e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
       }
   }

 String SDPATH = Environment.getExternalStorageDirectory() + "/myxiaoqu/";
    public void genxin(View view) {
        copyFilesFromAssets(this,"myxiaoqu",SDPATH);
        Toast.makeText(this, "拷贝完成", Toast.LENGTH_SHORT).show();
    }